Kelly explains the crucial differences in clean energies, and why solar may soon lead the way.
"The Exchange" on CNBC is a one-stop shop for the day's top business stories, along with breaking news and the must-see market movers heading into the back half of the trading day. This newsroom-based program also features lots of original reporting, in-depth conversations and showcases CNBC's award-winning investigative work. "The Exchange" has all that plus "Rapid Fire," our innovative, reporter driven roundtable – which is a discussion of some of the day's most interesting, unusual and at times controversial topics. This series gives today's modern investor the day's top stories, the must reads & a whole lot more.